Nanotech 2007 Vol. 1
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 1

Chapter 6: Nanoscale Modeling

# Scanning Tunneling Microscopy Images of Au Adsorbed on GaAs(111)B surface

Authors:H. Yi, P. Kratzer, E. Hilner and A. Mikkelsen
Affilation:KISTI, KR
Pages:458 - 461
Abstract:We have studied the GaAs(111)B surface with Au deposited either homogeneously or as nanoparticles, and found the presence of Au in either form to give rise to a $(\sqrt{3} \!\times\! \sqrt{3} )$ Au-induced surface reconstruction. In the structural model supported by our DFT calculations for an Au coverage of 1/3 ML, Au atoms are adsorbed at every third threefold hollow hcp site of the Ga lattice. The proposed structural model is in agreement with experimental data from low-energy electron diffraction and STM.